Medial Rotators

Question 1

Sartorius

Answer 1

Origins: ASIS
Insertions: proximal medial surface of the tibia
Action: flexes, abducts, laterally rotates the thigh and medically rotates the flexed knee
Innervation: L2-L3

Question 2

Semitendinosis

Answer 2

O: ischial tuberosity
I: medial surface of the proximal tibia
A: extends the hip, flexes and medially rotates the knee
I: sciatic nerve L5, S1, S2

Question 3

Popliteus

Answer 3

O- lateral femoral condole
I- proximal surface of posterior tibia
A- rotates knee medically and flexes the knee
I- tibial nerve, L4, S1

Question 4

Semimembranosius

Answer 4

O: ischial tuberosity
I: posterior aspect of the media, tibial condyle
A: extends the hip, flexes and medially forages the knee
I: sciatic nerve L5, S1, S2

Question 5

Gracilis

Answer 5

Origin: inferior Ramus of the pubis
Insertion: upper aspect of medial shaft of tibia
Action: medial rotation, addicts the hip, flexes and medial rotation of the knee
Innervation: obturator nerve L3-L4